Re: [RFC PATCH v1 02/18] x86: Secure Memory Encryption (SME) build enablement

From: Pavel Machek
Date: Wed Apr 27 2016 - 11:30:24 EST


On Wed 2016-04-27 10:17:36, Tom Lendacky wrote:
> On 03/22/2016 08:01 AM, Pavel Machek wrote:
> > On Tue 2016-04-26 17:56:14, Tom Lendacky wrote:
> >> Provide the Kconfig support to build the SME support in the kernel.
> >
> >
> > Probably should go last in the series?
>
> Yeah, I've seen arguments both ways for this. Doing it early
> allows compiling and testing with it enabled and doing it late
> doesn't enable anything until it's all there. I just chose the
> former.

Doing it early will break bisect, right?
Pavel

> >> +config AMD_MEM_ENCRYPT
> >> + bool "Secure Memory Encryption support for AMD"
> >> + depends on X86_64 && CPU_SUP_AMD
> >> + ---help---
> >> + Say yes to enable the encryption of system memory. This requires
> >> + an AMD processor that supports Secure Memory Encryption (SME).
> >> + The encryption of system memory is disabled by default but can be
> >> + enabled with the mem_encrypt=on command line option.
> >> +
> >> # Common NUMA Features
> >> config NUMA
> >> bool "Numa Memory Allocation and Scheduler Support"
> >

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